EP 0233490 A3 19890412 - METHOD FOR INCREASING THE MOLECULAR WEIGHT OF POLYAMIDES AND POLYESTERAMIDES
Title (en)
METHOD FOR INCREASING THE MOLECULAR WEIGHT OF POLYAMIDES AND POLYESTERAMIDES
Publication
Application
Priority
US 81996086 A 19860121
Abstract (en)
[origin: US4672094A] A process is described for increasing the molecular weights of thermoplastic polyamides and polyesteramides by fluxing and homogenizing the subject polymers which have been prepared by the reaction of an organic diisocyanate and a dicarboxylic acid with an effective amount of an organic diisocyanate reagent at a temperature of at least about 150 DEG C.
IPC 1-7
IPC 8 full level
C08G 69/48 (2006.01); C08G 18/34 (2006.01); C08G 18/42 (2006.01); C08G 18/60 (2006.01); C08G 18/83 (2006.01)
CPC (source: EP US)
C08G 18/341 (2013.01 - EP US); C08G 18/4263 (2013.01 - EP US); C08G 18/60 (2013.01 - EP US)
Citation (search report)
- [YD] US 4420602 A 19831213 - BONK HENRY W [US], et al
- [Y] GB 1225735 A 19710324
- [A] US 4042750 A 19770816 - HANSON ROBERT B, et al
- [A] FR 2011084 A1 19700227 - INVENTA AG
Designated contracting state (EPC)
BE DE FR GB IT NL SE
DOCDB simple family (publication)
US 4672094 A 19870609; CA 1266545 A 19900306; EP 0233490 A2 19870826; EP 0233490 A3 19890412; JP S62172012 A 19870729
DOCDB simple family (application)
US 81996086 A 19860121; CA 522021 A 19861103; EP 87100711 A 19870120; JP 30928386 A 19861227